So I started riding again regularly. My max. (I can't catch my breath ) HR is 160 bpm. Although before, I can go up to 170bpm. Ok so now I've had a good 2 weeks rest and lost some weight (about 8 lbs). When I climbed a hill, same hill where I blow up at 160 bpm, I saw my HRM registering 165bpm. I pushed myslef some more and saw that 170 bpm is my max (I can't catch my breath) HR. Can anyone make sense of this? I've been told HR tend to be lower with a higher power output (faster on climb or flats) as you get fitter which makes sense. More work for less effort. But how can I explain my situation? Thanks for any inputs. "keep the rubber side down"